A particle moves with a velocity 5hati-3...

A particle moves with a velocity `5hati-3hatj+6hatk ms^(-1)` under the influence of a constant force F=10hati+10hatj+20hatk N. The instantaneous power applied to the particle is

200 J/s

40J/s

140 J/s

170 J/s

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The correct Answer is:

`P=vec(F)vec(v).50-30 +120=140 J`

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